Secondary ejection structure
The secondary ejection structure addresses the challenges of prolonged cycles and increased costs in conventional molds by using dual hydraulic cylinders for primary and secondary ejection, enhancing mold ejection efficiency and stability.
Patent Information
- Application Number
- CN202420757692.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-12
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-04-12
AI Technical Summary
Conventional molds face issues with irreversible factors during mass production, leading to increased product holding force and prolonged production cycles due to the need for major changes and long processing cycles when implementing secondary ejection structures.
A secondary ejection structure utilizing a first hydraulic cylinder with a movable plate and push rod mechanism for primary ejection, followed by a second hydraulic cylinder with a guide block and push rod mechanism for secondary ejection, reducing product holding force and enhancing stability and efficiency.
The structure enables efficient batch ejection with high stability and reduced product holding force, improving mold ejection efficiency and stability.
Smart Images
Figure CN222270954U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mold ejection, in particular to a secondary ejection structure. Background Art
[0002] After the mold enters the mass production stage, it encounters certain irreversible factors such as assembly adjustment and product style change, which leads to a larger product holding force, and then the mass production of the mold cannot be achieved. The solution for conventional molds is to achieve secondary ejection by adding an ejector plate. This solution not only has a long processing cycle, but also requires major changes to the mold, which leads to a longer mass production cycle, increased maintenance costs, and poor mold stability. For this reason, we propose a secondary ejection structure for fast and stable ejection of the mold. Utility Model Content
[0003] The utility model aims to solve the shortcomings in the prior art and proposes a secondary ejection structure.
[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0005] A secondary ejection structure comprises a first mounting plate, auxiliary rods are fixed at both ends of the top of the first mounting plate, a second mounting plate is fixed at the top of the auxiliary rod, a first connecting plate and a second connecting plate are slidably connected to the auxiliary rod, a first hydraulic cylinder is installed at the bottom of the first mounting plate, a piston rod of the first hydraulic cylinder penetrates the first mounting plate and is connected to a movable plate, ejector mechanisms are fixed at both ends of the top of the movable plate, the first connecting plate and the second connecting plate are both connected to the ejector mechanisms, a guide block is fixed between the ejector mechanisms, a second hydraulic cylinder is fixed at the top of the guide block, and the piston rod of the second hydraulic cylinder penetrates the guide block and is connected to the movable plate.
[0006] Preferably, the number of the auxiliary rod, the first connecting plate, the second connecting plate and the push rod mechanism is four.
[0007] Preferably, the first connecting plate and the second connecting plate are completely identical plate-like structures, both the first connecting plate and the second connecting plate are provided with through grooves, and the first connecting plate and the second connecting plate are slidably connected to the auxiliary rod via the through grooves.
[0008] Preferably, the push rod mechanism includes a first push rod fixed on the top of the movable plate, a cavity is opened inside the first push rod, slide grooves are opened on both sides of the cavity, a fixed block is fixed inside the slide groove, a slider is slidably connected inside the slide groove, a movable rod is fixed on the top of the slider, the movable rod passes through the cavity and is slidably connected thereto, a limiting block is fixed on the top of the movable rod, a spring is installed between the limiting block and the first push rod, the spring is sleeved on the movable rod, and a second push rod is fixed on the top of the limiting block.
[0009] Preferably, two sides of the sliding block are respectively connected to the second connecting plate and the guide block, and the first connecting plate is connected to the fixing block.
[0010] Compared with the prior art, the beneficial effects of the utility model are:
[0011] The utility model realizes batch ejection by arranging a first hydraulic cylinder to cooperate with a movable plate and a push rod mechanism to perform a primary ejection, and then a second hydraulic cylinder to cooperate with a guide block and a push rod mechanism to perform a secondary ejection, thereby reducing the product holding force, and the stability and efficiency of the mold ejection are very high. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a structural schematic diagram of a secondary ejection structure proposed by the utility model;
[0013] Figure 2 for Figure 1 A cross-sectional view of the middle ejector mechanism;
[0014] Figure 3 for Figure 1 Installation diagram of the middle ejector mechanism;
[0015] Figure 4 for Figure 1 Axonometric view of the first connecting plate.
[0016] In the figure: 1 first mounting plate, 2 auxiliary rod, 3 second mounting plate, 4 first connecting plate, 5 second connecting plate, 6 first hydraulic cylinder, 7 movable plate, 8 push rod mechanism, 81 first push rod, 82 cavity, 83 slide groove, 84 fixed block, 85 slider, 86 movable rod, 87 limit block, 88 spring, 89 second push rod, 9 guide block, 10 second hydraulic cylinder. DETAILED DESCRIPTION
[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0018] Reference Figure 1-4, a secondary ejection structure comprises a first mounting plate 1, auxiliary rods 2 are fixed at both ends of the top of the first mounting plate 1, a second mounting plate 3 is fixed at the top of the auxiliary rod 2, a first connecting plate 4 and a second connecting plate 5 are slidably connected to the auxiliary rod 2, a first hydraulic cylinder 6 is installed at the bottom of the first mounting plate 1, a piston rod of the first hydraulic cylinder 6 penetrates the first mounting plate 1 and is connected to a movable plate 7, a push rod mechanism 8 is fixed at both ends of the top of the movable plate 7, the first connecting plate 4 and the second connecting plate 5 are both connected to the push rod mechanism 8, the first connecting plate 4 and the second connecting plate 5 are completely the same plate-shaped structure, the first connecting plate 4 and the second connecting plate 5 are both provided with through grooves, the first connecting plate 4 and the second connecting plate 5 are slidably connected to the auxiliary rod 2 through the through grooves, the number of the auxiliary rod 2, the first connecting plate 4, the second connecting plate 5 and the push rod mechanism 8 are all four groups, a guide block 9 is fixed between the push rod mechanism 8, a second hydraulic cylinder 10 is fixed on the top of the guide block 9, the piston rod of the second hydraulic cylinder 10 penetrates the guide block 9 and is connected to the movable plate The movable plate 7 is connected, and the ejector mechanism 8 includes a first ejector 81 fixed on the top of the movable plate 7. A cavity 82 is opened inside the first ejector 81, and slide grooves 83 are opened on both sides of the cavity 82. A fixed block 84 is fixed inside the slide groove 83, and a slider 85 is slidably connected inside the slide groove 83. A movable rod 86 is fixed on the top of the slider 85. The movable rod 86 passes through the cavity 82 and is slidably connected thereto. A limiting block 87 is fixed on the top of the movable rod 86. A spring 88 is installed between the limiting block 87 and the first ejector 81. The spring 88 is sleeved on the movable rod 86. A second ejector 89 is fixed on the top of the limiting block 87. The two sides of the slider 85 are respectively connected to the second connecting plate 5 and the guide block 9, and the first connecting plate 4 is connected to the fixed block 84. The first hydraulic cylinder is arranged to cooperate with the movable plate and the ejector mechanism for one ejection, and the second hydraulic cylinder is arranged to cooperate with the guide block and the ejector mechanism for a second ejection, thereby realizing batch ejection, reducing the product holding force, and the stability and efficiency of the mold ejection are very high.
[0019] When in use, the second mounting plate 3 is fixed at the bottom of the mold frame. After the mold is formed, the first hydraulic cylinder 6 is started, and the piston rod of the first hydraulic cylinder 6 drives the movable plate 7, and the movable plate 7 drives the ejector mechanism 8. The ejector mechanism 8 penetrates the second mounting plate 3 for the initial ejection operation. During this process, the ejector mechanism 8 drives the first connecting plate 4 and the second connecting plate 5 to slide on the auxiliary rod 2. After completing the initial ejection operation, the second hydraulic cylinder 10 is started, and the piston rod of the second hydraulic cylinder 10 acts on the movable plate 7. At this time, the guide block 9 drives the slider 85 to slide in the cavity 82 and the slide groove 83, and the slider 85 drives the second connecting plate 5, and the second connecting plate 5 slides on the auxiliary rod 2. At the same time, the slider 85 drives the movable rod 86, the limit plate 87 and the second ejector 89, so that the second ejector 89 performs the secondary ejection operation. After the ejection is completed, the first hydraulic cylinder 6 and the second hydraulic cylinder 10 are reversely started to reset the second ejector 89 and the ejector mechanism 8. The spring 88 keeps the second ejector 89 stable during this process, thereby improving the efficiency of mold demoulding.
[0020] In summary, compared with the prior art, the utility model realizes ejection in batches by setting a first hydraulic cylinder in cooperation with a movable plate and a push rod mechanism to perform a first ejection, and then uses a second hydraulic cylinder in cooperation with a guide block and a push rod mechanism to perform a second ejection, thereby reducing the product holding force, and the stability and efficiency of the mold ejection are very high.
[0021] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A secondary ejection structure, comprising a first mounting plate (1), characterized in that: Auxiliary rods (2) are fixed at both ends of the top of the first mounting plate (1), a second mounting plate (3) is fixed at the top of the auxiliary rod (2), a first connecting plate (4) and a second connecting plate (5) are slidably connected to the auxiliary rod (2), a first hydraulic cylinder (6) is installed at the bottom of the first mounting plate (1), a piston rod of the first hydraulic cylinder (6) passes through the first mounting plate (1) and is connected to a movable plate (7), a push rod mechanism (8) is fixed at both ends of the top of the movable plate (7), the first connecting plate (4) and the second connecting plate (5) are both connected to the push rod mechanism (8), a guide block (9) is fixed between the push rod mechanism (8), a second hydraulic cylinder (10) is fixed at the top of the guide block (9), and a piston rod of the second hydraulic cylinder (10) passes through the guide block (9) and is connected to the movable plate (7).
2. A secondary ejection structure according to claim 1, characterized in that: The number of the auxiliary rod (2), the first connecting plate (4), the second connecting plate (5) and the push rod mechanism (8) is four sets.
3. A secondary ejection structure according to claim 1, characterized in that: The first connecting plate (4) and the second connecting plate (5) are completely identical plate-shaped structures, and both the first connecting plate (4) and the second connecting plate (5) are provided with through slots, and the first connecting plate (4) and the second connecting plate (5) are slidably connected to the auxiliary rod (2) via the through slots.
4. A secondary ejection structure according to claim 1, characterized in that: The push rod mechanism (8) comprises a first push rod (81) fixed to the top of the movable plate (7); a cavity (82) is provided inside the first push rod (81); slide grooves (83) are provided on both sides of the cavity (82); a fixed block (84) is fixed inside the slide groove (83); a slider (85) is slidably connected inside the slide groove (83); a movable rod (86) is fixed on the top of the slider (85); the movable rod (86) passes through the cavity (82) and is slidably connected thereto; a limit block (87) is fixed on the top of the movable rod (86); a spring (88) is installed between the limit block (87) and the first push rod (81); the spring (88) is sleeved on the movable rod (86); and a second push rod (89) is fixed on the top of the limit block (87).
5. A secondary ejection structure according to claim 4, characterized in that: The two sides of the sliding block (85) are respectively connected to the second connecting plate (5) and the guide block (9), and the first connecting plate (4) is connected to the fixing block (84).